<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <div class="img">
                    <img src="../assets/avatar.jpg" alt="">
                </div>
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
         </el-header>
         <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="iscollapse?'64px':'200px'">
                <!-- 侧边栏的折叠和展开 -->
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区 -->
                <!-- unique-opened 是否只保持一个子菜单的展开 -->
                <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      :unique-opened="true"
      :collapse="iscollapse"
      :collapse-transition="false"
      :router="true"
      :default-active="activePath"
      >
      
      <!-- 一级菜单 -->
      <!-- index只能是字符串 所以拼接一个空串 -->
      <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
          <!-- 一级菜单的模板区 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 模板 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
            <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 模板 -->
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
      </el-submenu>
    </el-menu>
            </el-aside>
            <!-- 右侧内容 -->
            <el-main>
                <!-- 路由占位符 -->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    name:"home",
    data(){
        return{
            // 左侧菜单数据
            menuList:[],
            // 字体图标
            iconsObj:{
                '125':'iconfont icon-users',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-3702mima',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao',
            },
            // 是否折叠
            iscollapse:false,
            // 被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList();
        this.activePath=window.sessionStorage.getItem("activePath")
    },
    methods:{
        logout(){
            // 清空token
            window.sessionStorage.clear();
        // 跳转到登录页
            this.$router.push("/loginOne")
        },
        // 获取所有的菜单
       async getMenuList(){
         const {data:res}= await this.$http.get('menus');
         console.log(res);
         if(res.meta.status!==200) return this.$message.error(res.meta.msg);
         this.menuList=res.data;
        },
        // 侧边栏按钮折叠与展开
        toggleCollapse(){
            this.iscollapse=!this.iscollapse
        },
        // 保存连接的激活状态
        saveNavState(activePath){
            // console.log(activePath);
            window.sessionStorage.setItem('activePath',activePath);
            this.activePath=activePath
        }
    },
    
}
</script>
<style lang="less" scoped>
.home-container{
    height:100%;
}
     .el-header {
    background-color: #373d41;
    color: #FFF;
    display: flex;
    justify-content: space-between;
    padding-left:0;
    align-items: center;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
  }
  .el-header>div .img{
      width:50px;
       height: 50px;
       padding:5px;
       background-color: #fff;
       border-radius: 50%;
       box-shadow: 0 0 10px;
  }
   .el-header img{
       width:100%;
       height:100%;
       border-radius: 50%;
   }
  .el-aside {
    background-color: #333744;
    color: #FFF;
    user-select: none;
    .el-menu{
        border-right:none;
    }
  }
  .el-main {
    background-color: #eaedf1;
  }
  .iconfont{
      margin-right:10px;
  }
  .toggle-button{
      background-color: #4A5064;
      font-size: 10px;
      line-height: 24px;
      text-align: center;
      letter-spacing: 0.2em;
      cursor: pointer;
      user-select: none;
  }
  
</style>